We mustn't pretend to know what we don't know.
我們不要不懂裝懂。
Why didn' t you show up at the meeting yesterday ?
昨天的會你怎么沒來?
How much money I earn is none of your business.
我掙多少錢與你無關(guān)。
The boxer has fought many opponents.
該拳手已與許多對手交鋒。